Method, device, and recording medium storing bit stream, for encoding/decoding image

2. The device of claim 1, wherein, in response to a case in which the current pixel in the current block is representative of a pixel located on the division line, the first weight and the second weight are determined as 4, respectively.

4. The device of claim 3, wherein the division of the current block is performed only on the block for which the tree-based block division is no longer performed.

5. The device of claim 4, wherein the motion information of the current block is derived based on a merge mode.

7. The device of claim 6, wherein a shape of at least one of the first partition and the second partition is triangular.